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All results from a given calculation for CH3PH2 (Methyl phosphine)

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at G4
 hartrees
Energy at 0K-382.278481
Energy at 298.15K-382.273721
HF Energy-382.470103
Nuclear repulsion energy59.783932
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B3LYP/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3142 3032 8.67      
2 A 3050 2944 12.78      
3 A 2375 2292 61.04      
4 A 1475 1423 3.75      
5 A 1324 1278 0.46      
6 A 1121 1081 16.22      
7 A 996 961 39.69      
8 A 738 712 0.32      
9 A 670 647 7.23      
10 A 3128 3018 7.88      
11 A 2382 2299 88.37      
12 A 1479 1427 4.54      
13 A 1036 1000 17.62      
14 A 697 673 0.38      
15 A 235 227 2.20      

Unscaled Zero Point Vibrational Energy (zpe) 11923.3 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 11506.0 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B3LYP/6-31G(2df,p)
ABC
2.39535 0.38935 0.38581

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.071 1.192 0.000
P2 0.071 -0.676 0.000
H3 -0.929 1.630 0.000
H4 0.613 1.543 0.882
H5 0.613 1.543 -0.882
H6 -0.890 -0.867 -1.033
H7 -0.890 -0.867 1.033

Atom - Atom Distances (Å)
  C1 P2 H3 H4 H5 H6 H7
C11.86771.09121.09321.09322.49602.4960
P21.86772.51282.44802.44801.42331.4233
H31.09122.51281.77851.77852.70252.7025
H41.09322.44801.77851.76443.42532.8440
H51.09322.44801.77851.76442.84403.4253
H62.49601.42332.70253.42532.84402.0652
H72.49601.42332.70252.84403.42532.0652

picture of Methyl phosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 P2 H6 97.585 C1 P2 H7 97.585
P2 C1 H3 113.690 P2 C1 H4 108.686
P2 C1 H5 108.686 H3 C1 H4 108.975
H3 C1 H5 108.975 H4 C1 H5 107.661
H6 P2 H7 93.233
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.390      
2 P -0.158      
3 H 0.138      
4 H 0.138      
5 H 0.138      
6 H 0.067      
7 H 0.067      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.654 1.120 0.000 1.297
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 44.882
(<r2>)1/2 6.699